* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
  font-weight: bold;
}
html,
body {
  width: 100%;
  height: 100%;
}
ul {
  width: 150px;
  height: 100%;
  background: skyblue;
}
ul > li > b {
  float: right;
  margin-right: 20px;
  /* transform: rotateZ(90deg); */
}
ul li {
  line-height: 36px;
}
ol {
  padding-left: 30px;
  display: none;
}
